Update README_Install_Mac.md

- changed syntax to markdown
- minor fixes

README_Install_Mac.md

@@ -1,27 +1,45 @@
-=Installation on Mac OS 10.8 for development
+Installation on Mac OS 10.8 for development
+===========================================
 
-== Prerequisits
-* Install xcode, open it -> Xcode menu > Preferences > Downloads -> install command line tools
-* curl -L https://get.rvm.io | bash -s stable --ruby
-* source /Users/me/.rvm/scripts/rvm
+Prerequisites
+------------
+* Install Xcode from the App Store, open it -> Xcode menu > Preferences > Downloads -> install command line tools
+
+````shell
+    curl -L https://get.rvm.io | bash -s stable --ruby
+    source ~/.rvm/scripts/rvm
+````
 * start new shell -> ruby -v
 
-== Get Zammad
-* cd ~/src/
-* wget http://zammad.org/zammad-1.0.1.tar.gz
-* tar -xzf zammad-1.0.1.tar.gz
+Get Zammad
+----------
 
-== Install Zammad
-* cd zammad-1.0.1
-* bundle install
-* sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib # if needed!
-* rake db:migrate
-* rake db:seed
+````shell
+    test -d ~/zammad/ || mkdir ~/zammad 
+    cd ~/zammad/
+    curl -L -O http://zammad.org/zammad-latest.tar.bz2 | tar -xj
+````
 
-== Start Zammad
-* rails server # rails web server
-* ruby script/websocket-server.rb # non blocking websocket server
-* rails runner 'Session.jobs' # generate overviews on demand, just send changed data to browser
+Install Zammad
+--------------
 
-== Start init page
+````shell
+    cd zammad-latest
+    bundle install
+    sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib # if needed!
+    rake db:migrate
+    rake db:seed
+````
+
+Start Zammad
+------------
+
+````shell
+    rails server # rails web server
+    ruby script/websocket-server.rb # non blocking websocket server
+    rails runner 'Session.jobs' # generate overviews on demand, just send changed data to browser
+````
+
+Start init page
+---------------
 * http://localhost:3000/#getting_started